Recently, I spot this flaky compile failure quite a few times when I was looking into why Findit try-jobs found the wrong culprits for compile failures.
Examples of this specific compile failure:

https://findit-for-me.appspot.com/waterfall/build-failure?url=https://build.chromium.org/p/chromium/builders/Win/builds/43012
https://findit-for-me.appspot.com/waterfall/build-failure?url=https://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20Mac/builds/9996

/b/build/slave/cache/cipd/goma/gomacc  .........  -c ../../media/gpu/ipc/service/media_channel.cc -o obj/media/gpu/ipc/service/media_gpu_ipc_service.media_channel.o
In file included from ../../media/gpu/ipc/service/media_channel.cc:5:
In file included from ../../media/gpu/ipc/service/media_channel.h:13:
In file included from ../../media/video/video_decode_accelerator.h:17:
In file included from ../../media/base/video_decoder_config.h:16:
../../media/base/video_codecs.h:11:10: fatal error: 'media/media_features.h' file not found
#include "media/media_features.h"


After looking into the code, I found some clues:
1. media/gpu/ipc/service/media_channel.cc indirectly depends on media/media_features.h as show above
2. media/gpu/ipc/service/media_channel.cc is included in source list of media_ipc.gyp:media_gpu_ipc_service
3. Header file media/media_features.h is generated by media.gyp:media_features
4. media_ipc.gyp:media_gpu_ipc_service doesn't directly depends on media.gyp:media_features

This situation seems to be the same in the build.gn files too.


servolk@, I assigned to you because this recent CL https://codereview.chromium.org/1677133003 made media/base/video_codecs.h depend on media/media_features.h
If you are not the right person, please help route this bug to the right person.